Does string theory predict an open universe?

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dc.creatorBuniy, R.
dc.creatorHsu, S.
dc.creatorZee, A.
dc.date2006-10-20
dc.date2008-01-07
dc.date.accessioned2026-07-07T11:43:56Z
dc.date.available2026-07-07T11:43:56Z
dc.descriptionIt has been claimed that the string landscape predicts an open universe, with negative curvature. The prediction is a consequence of a large number of metastable string vacua, and the properties of the Coleman--De Luccia instanton which describes vacuum tunneling. We examine the robustness of this claim, which is of particular importance since it seems to be one of string theory's few claims to falsifiability. We find that, due to subleading tunneling processes, the prediction is sensitive to unknown properties of the landscape. Under plausible assumptions, universes like ours are as likely to be closed as open.
dc.description4 pages, 1 figure, revtex. Final version to appear in Physics Letters B
dc.identifierhttps://arxiv.org/abs/hep-th/0610231
dc.identifierhttp://arxiv.org/abs/hep-th/0610231
dc.identifierPhys.Lett.B660:382-385,2008
dc.identifierdoi:10.1016/j.physletb.2008.01.007
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201426
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleDoes string theory predict an open universe?
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